FreeBSD/Linux Kernel Cross Reference
sys/dev/bktr/bktr_core.h

     /* $FreeBSD: releng/8.4/sys/dev/bktr/bktr_core.h 139749 2005-01-06 01:43:34Z imp $ */
     
     /*
      * This is part of the Driver for Video Capture Cards (Frame grabbers)
      * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
      * chipset.
      * Copyright Roger Hardiman and Amancio Hasty.
      *
      * bktr_core : This deals with the Bt848/849/878/879 PCI Frame Grabber,
     *               Handles all the open, close, ioctl and read userland calls.
     *               Sets the Bt848 registers and generates RISC pograms.
     *               Controls the i2c bus and GPIO interface.
     *               Contains the interface to the kernel.
     *               (eg probe/attach and open/close/ioctl)
     *
     */
    
    /*-
     * 1. Redistributions of source code must retain the
     * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Amancio Hasty and
     *      Roger Hardiman
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    
    int             i2cWrite( bktr_ptr_t bktr, int addr, int byte1, int byte2 );
    int             i2cRead( bktr_ptr_t bktr, int addr );
    
    void            msp_dpl_reset( bktr_ptr_t bktr, int i2d_addr );
    unsigned int    msp_dpl_read( bktr_ptr_t bktr, int i2c_addr, unsigned char dev, unsigned int addr );
    void            msp_dpl_write( bktr_ptr_t bktr, int i2c_addr, unsigned char dev,
                                   unsigned int addr, unsigned int data );
    
    
    /*
     * Defines for userland processes blocked in this driver
     *   For /dev/bktr[n] use memory address of bktr structure
     *   For /dev/vbi[n] use memory address of bktr structure + 1
     *                   this is ok as the bktr structure is > 1 byte
     */                 
    #define BKTR_SLEEP  ((caddr_t)bktr    )
    #define VBI_SLEEP   ((caddr_t)bktr + 1)
    
    
    /* device name for printf */
    const char *bktr_name(bktr_ptr_t bktr);
    
    /* Prototypes for attatch and interrupt functions */
    void    common_bktr_attach( bktr_ptr_t bktr, int unit,
                            u_long pci_id, u_int rev ); 
    int     common_bktr_intr( void *arg );
    
    
    /* Prototypes for open, close, read, mmap and ioctl calls */
    int     video_open( bktr_ptr_t bktr ); 
    int     video_close( bktr_ptr_t bktr );
    int     video_read( bktr_ptr_t bktr, int unit, struct cdev *dev, struct uio *uio );
    int     video_ioctl( bktr_ptr_t bktr, int unit,
                            ioctl_cmd_t cmd, caddr_t arg, struct thread* pr );
    
    
    int     tuner_open( bktr_ptr_t bktr );
    int     tuner_close( bktr_ptr_t bktr );
    int     tuner_ioctl( bktr_ptr_t bktr, int unit,
                            ioctl_cmd_t cmd, caddr_t arg, struct thread* pr );
    
    int     vbi_open( bktr_ptr_t bktr );
    int     vbi_close( bktr_ptr_t bktr );
    int     vbi_read( bktr_ptr_t bktr, struct uio *uio, int ioflag );
    

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